cmed
The major differences are:
System Restore
System file Protection
Help and Support Menu
There are others if you wish to read MS Hype
Click Here
System restore is nice since you can easily restore your system to a previous stable state. It is much like scanreg /restore if you are familiar with that except restore is accessible in normal mode and safe mode. It also can have 30 plus days to restore to instead of five.
System file protection is an automatic version of SFC. When ME install it install all the cab files and locks certain system files from change. If a protected system file is changed it will automatically replace it with the correct one upon restart.
Help and support has many aspects you will have to explore there to find what its capable of.
You will find little things different to as you go along.
Have fun and don't be afraid to ask if you have problems.
Dave